Re: Nonlinear Discrete

*To*: mathgroup at yoda.physics.unc.edu*Subject*: Re: Nonlinear Discrete*From*: bert at netcom.com (Roberto Sierra)*Date*: Thu, 3 Mar 1994 03:21:44 -0800

Norbert Scherm (<scherm at ifm.uni-hannover.de>) wrote: << y[k_]:=0.5*y[k-1]+1*y[k-2]+y[k-1]*y[k-1]; -and- y[i]=0.5*y[i-1]+1*y[i-2]+y[i-1]*y[i-1]; >> Norbert is correct in everything state -- the one suggestion I would have is to replace the term 0.5*y[k-1] (or 0.5*y[i-1]) with y[k-1]/2 (or y[i-1]/2). Though this may seem trivial, this has ramifications when you're tring to find an exact value using integral or rational numbers. -- Roberto Sierra Tempered MicroDesigns San Francisco, CA